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Finding the Fourth Proportional to 289,368.70, 433,707.45 and 120,888.70

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Solution

The fourth proportional to 289,368.70, 433,707.45 and 120,888.70 is: 181,188.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,368.70 : 433,707.45 = 120,888.70 : x
  2. Step 2: Convert to fraction form
    289,368.70/433,707.45 = 120,888.70/x
  3. Step 3: Cross multiply
    289,368.70x = 433,707.45 × 120,888.70
  4. Step 4: Simplify right side
    289,368.70x = 52,430,329,810.82
  5. Step 5: Solve for x
    x = 52,430,329,810.82/289,368.70
  6. Step 6: Final answer
    x = 181,188.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.